Kinorhyncha

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Kinorhyncha Temporal range: Early Cambrian–Recent[1] PreꞒ Ꞓ O S D C P T J K Pg N
Echinoderes hwiiza
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Clade:	Bilateria
Clade:	Nephrozoa
(unranked):	Protostomia
Superphylum:	Ecdysozoa
Clade:	Scalidophora
Phylum:	Kinorhyncha Reinhard, 1881
Orders
See text

Kinorhyncha /kaɪnoʊˈrɪŋkə, kɪnə-/ (Ancient Greek: κινέω, romanized: kīnéō, lit. 'I move', ῥύγχος rhúnkhos "snout") is a phylum of small marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos. They are commonly called mud dragons. Modern species are 1 mm (0.039 in) or less, but Cambrian forms could reach 4 cm (1.6 in).^[2]